This morning one of my five hens vomitted. She was keeping to herself in the yard and then I watched her vomit up brownish fluid. When I put out their fresh fruit/veggies, she would not eat. Some background. My hens free-range in my backyard all day. They eat hen scratch, triple duty, pigeon feed (tiny amount) and chopped fruit/veggies (daily). About 10 days ago I went outside at dusk to lock up the coop and this hen was still hovering outside. When I urged her into the coop, she would not hop up onto the perches. She also was bumping into the walls! I took her inside into my indoor rehab coop. I tested her and she could see in the light. She also ate and drank up a storm. By the next morning she seemed fine. I put her back outside and she has cooped up and eaten with no problems since that time. One thing I noticed is that there are a few daphne berries on the ground (poisoning?) Also, another hen had some tapeworm segments in her droppings yesterday (parasites?) She was vaccinated for marek's. I felt up her gut and found no signs of obvious tumors or swelling. She is a large brahma. Any thoughts?